If I said mast, I
misspoke. I purchased a new boom because I wanted to increase the
foot of my main sail by 12 inches. (San Juan 24's were designed to fly a 165%
Genoa. However, 155% is the largest sail allowed in PHRF racing, so I
re-designed the sail plan, purchased a longer boom with a new Quantum racing
main. The new larger footed main, with an open foot, resulted
in profound improvements in my off the wind boat speeds. Under the
Schell Formula, this modification reduced my PHRF from 216 to 215; well worth
it.)

Anyway, as is my habit, I
over killed the new boom. The extrusion size is one used for 30+ foot
boats. Both ends were welded on. It has two internal reefing lines
and a 4:1 mechanical advantage outhaul. All of this cost about
$700.

The new boom,
and, to the best of my knowledge, ALL of the spars used by Clark,
were manufactured by Spar Tech Co. in Redmond Washington: